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平原水库藻类生长特征及影响因素分析

2024-05-21刘大伟刘加召房亚南郭亚峰刘素徐征和赵艳侠许伟颖

济南大学学报(自然科学版) 2024年3期

刘大伟 刘加召 房亚南 郭亚峰 刘素 徐征和 赵艳侠 许伟颖

文章编号:1671-3559(2024)03-0300-06DOI:10.13349/j.cnki.jdxbn.20240401.001

摘要: 为了研究平原水库的水质变化及其对藻类生长繁殖、 种群结构变化的影响,以山东某平原水库为例,通过对水库不同采样点的水质指标、 叶绿素a含量、 藻类种群变化及水库营养状态的分析,综合评价水库水质状况,总结影响水库藻类生长的关键因素。结果表明,水库河流汇入区域及水流缓慢区易出现营养盐等污染物滞留、 沉降和富集现象,存在总氮超标风险;各采样点均呈现富营养甚至重度富营养状态;河流入口及部分狭小库区水体的综合营养状态指数较大,叶绿素a含量也较高;水体中的浮游藻类主要为绿藻和硅藻,其生长繁殖受总磷影响显著,总磷是防止藻华发生的关键控制因素。

关键词: 水库; 藻类生长; 叶绿素a; 總氮; 总磷

中图分类号: X524

文献标志码: A

开放科学识别码(OSID码):

Analysis on Characteristics and Key Factors of

Algae Growth in Plain Reservoir

LIU Dawei1, LIU Jiazhao1, FANG Yanan2, GUO Yafeng3, LIU Su2,

XU Zhenghe2, ZHAO Yanxia2, XU Weiying2

(1. Shandong Eighth Institute of Geology and Mineral Resources Exploration ,Shandong Provincial Bureau of Geology and Mineral

Resources, Rizhao 276826, Shandong, China; 2. School of Water Conservancy and Environment, University of Jinan, Jinan 250022,

Shandong, China; 3. State Grid Liaocheng Power Supply Company, Liaocheng 252000, Shandong, China)

Abstract: To study the water quality change and its impact on algae growth, reproduction and population structure in a plain reservoir, a plain reservoir in Shandong Province was taken as an example to comprehensively evaluate the water quality of the reservoir and summarize the key factors affecting algae growth in the reservoir through the analysis of water quality indexes, chlorophyll a content, algal population changes and nutrient status of the reservoir at different sampling points. The results show that the retention, sedimentation and enrichment of nutrients and other pollutants are easy to occur in the area where the river flows into the reservoir and the area where the water flow is slow, and there is a risk of exceeding the total nitrogen. All sampling sites show eutrophication or even severe eutrophication. The comprehensive nutrient state index and chlorophyll a content of water in river inlet and some narrow reservoir areas are higher. Algae in the water are mainly green algae and diatoms, and their growth and reproduction are significantly affected by total phosphorus, which is a key control factor to prevent algal blooms.

Keywords: reservoir; algae growth; chlorophyll a; total nitrogen; total phosphorus

收稿日期: 2023-02-08          网络首发时间:2024-04-01T12:13:42

基金项目: 国家自然科学基金项目(52270005);日照市重点研发计划项目(2021ZDYF010234);济南大学科技计划项目(XKY2205)

第一作者简介: 刘大伟(1989—),男,山东青岛人。工程师,硕士,研究方向为水文地质与地质实验测试。E-mail: liudawei4161@126.com。

通信作者简介: 许伟颖(1984—),女,山东潍坊人。副教授,博士,硕士生导师,研究方向为水处理技术。E-mail: stu_xuwy@ujn.edu.cn。

网络首发地址: https://link.cnki.net/urlid/37.1378.N.20240401.0952.002

现代工农业的迅猛发展,导致大量氮、 磷等无机、 有机营养物质排入河流、 湖泊甚至水库等地表水源水体,造成藻类大量生长繁殖,藻华现象频发,已成为淡水生态系统最具有挑战性的水环境污染问题[1]。……

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